Re: [syzbot] [mm?] INFO: rcu detected stall in sys_umount (3)

syzbot has bisected this issue to:

commit d15121be7485655129101f3960ae6add40204463
Author: Paolo Abeni [off-list ref]
Date:   Mon May 8 06:17:44 2023 +0000

    Revert "softirq: Let ksoftirqd do its job"

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1066f9f8580000
start commit:   feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1266f9f8580000
console output: https://syzkaller.appspot.com/x/log.txt?x=1466f9f8580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7
dashboard link: https://syzkaller.appspot.com/bug?extid=1ec0f904ba50d06110b1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13c060f8580000

Reported-by: syzbot+1ec0f904ba50d06110b1@syzkaller.appspotmail.com
Fixes: d15121be7485 ("Revert "softirq: Let ksoftirqd do its job"")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection